Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Reexamination Certificate
2007-04-25
2011-11-29
Ilan, Ruth (Department: 3616)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
C701S051000, C701S058000
Reexamination Certificate
active
08068964
ABSTRACT:
A method for determining the driving resistance of a motor vehicle simultaneously with a shift of an automated shift transmission from a load gear to a target gear such that if a difference between a first driving resistance value F_fw_1 and a second driving resistance value F_fw_2 is large, the shift operation can be corrected. The second driving resistance value F_fw_2 is determined during the shift operation. a time interval Δt which contains the traction-force-free phase of the shift, a plurality of acceleration values a_i of the motor vehicle are measured to obtain the minimum acceleration a_min if the shift operation is a traction shift or the maximum acceleration a_max if it is thrust shift. With the mass m of the vehicle, the second driving resistance value F_fw_2 is calculated with one of the formula F_fw_2=−m*a_min or F_fw_2=−m*a_max.
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Sauter Ingo
Wolfgang Werner
Würthner Maik
Davis & Bujold P.L.L.C.
Ilan Ruth
ZF Friedrichshafen AG
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